Non-food sales decreased 1.7% on the month in June in data adjusted for the number of working days and seasonal factors, INS said.
On the other hand, fuel sales rose 1% in June from the previous month, while sales of food, drinks and tobacco inched up 0.2%.
In annual terms, adjusted retail sales fell 8.3% in June, due to declines in all sectors.
Sales of food, drinks and tobacco were down 10% in June from the same month a year earlier, while sales of non-food items decreased by 8.8%. Fuel sales slid 5% on the year in June.
In the first year-half, Romanian adjusted retail sales declined 6.2% on the year, again due to falling consumption in all sectors, the statistics data showed.